Video: 2012 C63 AMG P31 vs 2011 C63 AMG MBH Full-Length Headers + Kleemann Stage 2
Re-posting this vid from xtyper's "Dyno Results - MBH Headers + Kleemann Tune" thread as it was buried pretty deep in there.
We made a couple runs at the shift s3ctor event at willow springs and his car easily took my stock P31.
We were both in 2nd gear at 40MPH and S (S+ in my case in the 2012).
Multiple runs were made, same result each time.
(I believe one of the runs was from 30 MPH)
Headers + tune = monster, we already knew that... but I didn't think it would pull so hard on my stock P31.
Great day at the track, lots of fun runs.
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Eric's car is a beast, after running it on the track of course I'm thinking about it now.
You guys are such *******s!

Do tuned + headers P31's make any more power then a non P31 tune + headers C63?
How much power does the lightweight forged pistons, forged connecting rods and forged crankshaft really make?
...Or did AMG just throw it in to justify the price of the P31?
The Best of Mercedes & AMG
Eric's car is a beast, after running it on the track of course I'm thinking about it now.
You guys are such *******s!

Do tuned + headers P31's make any more power then a non P31 tune + headers C63?
How much power does the lightweight forged pistons, forged connecting rods and forged crankshaft really make?
...Or did AMG just throw it in to justify the price of the P31?
On a side note, I'm probably doing some vbox runs late tomorrow night. Hit me up if you're interested in joining. The weather is great and you might be able to take down DD GT3 RD's stock p31 record of 9.79 (if memory serves).
Last edited by xtyper; Nov 12, 2011 at 08:05 PM.
On a side note, I'm probably doing some vbox runs late tomorrow night. Hit me up if you're interested in joining. The weather is great and you might be able to take down DD GT3 RD's stock p31 record of 9.79 (if memory serves).
Do you know if his run was done totally level?
And the way you walked away from him, I bet your 60-130 must be in the 8 second range now!
Do you know if his run was done totally level?
And the way you walked away from him, I bet your 60-130 must be in the 8 second range now!
As for me, I would be very happy with anything in the 8's. We'll see.
As for me, I would be very happy with anything in the 8's. We'll see.
We just started to open up a forum on the Shift-S3ctor website so everyone from the day can share their vids. Register and post it up at www.shift-s3ctor.com/forum!
Eric's car is a beast, after running it on the track of course I'm thinking about it now.
You guys are such *******s!

Do tuned + headers P31's make any more power then a non P31 tune + headers C63?
How much power does the lightweight forged pistons, forged connecting rods and forged crankshaft really make?
...Or did AMG just throw it in to justify the price of the P31?
One P31
One Stock then chipped
P31 would pull away from the stock one
P31 and a chipped one were dead even
http://www.youtube.com/watch?v=VxFiC6_oMsA
So though Mercedes says P31/P30/APX only adds 30hp.... I think it is much much more.
because these chip makers claim 60-80hp gains...
Stock 451HP + lets say 70 hp from a chip = 521hp
P31/P30/APX factory equipped car is 481hp
A chipped car should have roughly 30-40hp more...
Go factory P31 (APX in Canada)!!!
Now I need headers.........
Re-posting this vid from xtyper's "Dyno Results - MBH Headers + Kleemann Tune" thread as it was buried pretty deep in there.
We made a couple runs at the shift s3ctor event at willow springs and his car easily took my stock P31.
We were both in 2nd gear at 40MPH and S (S+ in my case in the 2012).
Multiple runs were made, same result each time.
(I believe one of the runs was from 30 MPH)
Headers + tune = monster, we already knew that... but I didn't think it would pull so hard on my stock P31.
Great day at the track, lots of fun runs.
Last edited by xtyper; Nov 13, 2011 at 11:10 AM.

This forum is evil, my C63 Coupe is still crossing the Atlantic and I already have HRE wheels and an exhaust in my mental shopping cart. Lol
Eric's car is a beast, after running it on the track of course I'm thinking about it now.
You guys are such *******s!

Do tuned + headers P31's make any more power then a non P31 tune + headers C63?
How much power does the lightweight forged pistons, forged connecting rods and forged crankshaft really make?
...Or did AMG just throw it in to justify the price of the P31?
I would assume a P31 with headers + tune would be considerably faster then a non P31 with the same mods.
Im no tech or master mechanic but Id bet on it not making any more power
Last edited by DD GT3 RD; Nov 14, 2011 at 04:17 AM.
Might as well just buy it now so you don't have to wait when you car gets here.
On a side note, I'm probably doing some vbox runs late tomorrow night. Hit me up if you're interested in joining. The weather is great and you might be able to take down DD GT3 RD's stock p31 record of 9.79 (if memory serves).
Again, thanks for making me think about getting headers and a tune every time I drive my car now. Punching you right in the neck next time I see you.
Re-posting this vid from xtyper's "Dyno Results - MBH Headers + Kleemann Tune" thread as it was buried pretty deep in there.
We made a couple runs at the shift s3ctor event at willow springs and his car easily took my stock P31.
We were both in 2nd gear at 40MPH and S (S+ in my case in the 2012).
Multiple runs were made, same result each time.
(I believe one of the runs was from 30 MPH)
Headers + tune = monster, we already knew that... but I didn't think it would pull so hard on my stock P31.
Great day at the track, lots of fun runs.
Eric's car is a beast, after running it on the track of course I'm thinking about it now.
You guys are such *******s!

Do tuned + headers P31's make any more power then a non P31 tune + headers C63?
How much power does the lightweight forged pistons, forged connecting rods and forged crankshaft really make?
...Or did AMG just throw it in to justify the price of the P31?
Another thing to note is that forged pistons actually expand and contract more than cast pistons, so the piston to bore clearance has to be set up looser with more tolerance for a safety margin, so it's quite probable to say the forged piston motor would not have as good of ring seal to the cylinder because of this added clearance, aka, less power with everything else being equal. Just sayin. Although if these p31 cars had the SLS's dry sump oiling, that would EASILY more than make up for either of the power deficits mentioned above. Happy reading all.







